Yi-Tan-Siew混沌密码的安全性
On the Security of the Yi-Tan-Siew Chaos-Based Cipher
摘要：
本文对[IEEE TCAS-I 49（12）：1826-1829（2002）]中提出的Yi-Tan-Siew混沌密码的安全性进行了全面的分析。提出了一种差分选择明文攻击和差分选择密文攻击来破解子密钥K，并假设攻击者可以改变时间戳，这在此类攻击中是合理的。同时，从理论和实验两方面阐明了子密钥$α$和$β$的安全性问题。进一步的分析表明，该密码的安全性是独立的使用混沌帐篷映射，一旦子密钥$K$被删除，通过建议的差分选择明文攻击。
英文摘要：
This paper presents a comprehensive analysis on the security of the Yi-Tan-Siew chaotic cipher proposed in [IEEE TCAS-I 49(12):1826-1829 (2002)]. A differential chosen-plaintext attack and a differential chosen-ciphertext attack are suggested to break the sub-key K, under the assumption that the time stamp can be altered by the attacker, which is reasonable in such attacks. Also, some security Problems about the sub-keys $α$ and $β$ are clarified, from both theoretical and experimental points of view. Further analysis shows that the security of this cipher is independent of the use of the chaotic tent map, once the sub-key $K$ is removed via the proposed suggested differential chosen-plaintext attack.
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